Alert archive / Arkansas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 272, NWS Little Rock, AR

July 4, 2017Monroe County, Prairie County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Jul 4, 2017, 5:38 PM CDT for Monroe County, Prairie County, Arkansas. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 4, 2017, 5:38 PM CDT (22:38 UTC)
Expired: Jul 4, 2017, 6:15 PM CDT
In force: 37 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Monroe County, AR, Prairie County, AR

The radar

The Little Rock radar (KLZK), 81 km from the middle of the area, began a volume at 22:42 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Little Rock, AR (KBYH), launched 12:00Z, 10.6 hours before the alert went out and 131 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1262 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 811 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -59 m²/s²
0-3 km storm-relative helicity: -49 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Little Rock, AR wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 4, 3:02 PM CDT, 2 hours 36 minutes earlier.

Area forecast discussion, Jul 4, 3:02 PM CDT, 2 hours 36 minutes before

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Hazardous weather outlook, Jul 4, 1:55 PM CDT, 3 hours 43 minutes before

Hazardous Weather Outlook
National Weather Service Little Rock AR
155 PM CDT Tue Jul 4 2017

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-051000-
Boone-Marion-Baxter-Fulton-Sharp-Newton-Searcy-Stone-Izard-
Independence-Johnson-Pope-Van Buren-Cleburne-Jackson-Logan-Conway-
Faulkner-White-Woodruff-Scott-Yell-Perry-Polk-Montgomery-Garland-
Saline-Pulaski-Lonoke-Prairie-Monroe-Pike-Clark-Hot Spring-Grant-
Jefferson-Arkansas-Dallas-Cleveland-Lincoln-Desha-Ouachita-Calhoun-
Bradley-Drew-
155 PM CDT Tue Jul 4 2017

This Hazardous Weather Outlook is for a Large Part of Arkansas.

.DAY ONE...Today and Tonight

Scattered showers and thunderstorms are expected across much of
Arkansas through tonight. Through late afternoon, heavy rain, and
brief damaging wind gusts will be possible with the strongest
storms. The strongest storms are expected to affect areas along and
northeast of a line from Harrison, to Clarendon.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Scattered showers and thunderstorms are possible through the period
with the best chances over the north and northeast sections of the
state. Some decrease in coverage is expected over the weekend as
upper level high pressure starts to build in from the west. Overall,
the chances for hazardous weather are minimal during this period.

.Spotter Information Statement...

Spotter activation is not expected at this time.

&&

Visit NWS Little Rock on the web. Go to http://weather.gov/lzk.

55/44/56

In the hours before

Special weather statement, Jul 4, 2:29 PM CDT, 3 hours 9 minutes before

Special Weather Statement
National Weather Service Little Rock AR
229 PM CDT TUE JUL 4 2017

ARZ007-014>016-024-025-033-042015-
White AR-Stone AR-Independence AR-Sharp AR-Izard AR-Jackson AR-
Cleburne AR-
229 PM CDT TUE JUL 4 2017

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL STONE...
INDEPENDENCE...SOUTHEASTERN IZARD...SOUTHWESTERN JACKSON...
SOUTHEASTERN CLEBURNE...NORTHEASTERN WHITE AND SOUTHWESTERN SHARP
COUNTIES UNTIL 315 PM CDT...

At 229 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Croker to near Batesville to 6 miles
southeast of Concord to near Pangburn. Movement was northeast at 20
mph.

Wind gusts up to 50 mph will be possible with these storms.

Locations impacted include...
Batesville...                     Cave City...
Newark...                         Pangburn...
Cushman...                        Mount Pleasant...
Pleasant Plains...                Oil Trough...
Magness...                        Sidney...
Moorefield...                     Salado...
Croker...                         Steprock...
Gid...                            Southside in Independence Count...
Stella...                         Sulphur Rock...
Evening Shade...                  Bethesda...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3617 9169 3597 9139 3582 9141 3544 9146
      3538 9199 3556 9181 3571 9179 3586 9202
TIME...MOT...LOC 1929Z 231DEG 17KT 3586 9190 3575 9174 3560 9175 3548
9188

57

Special weather statement, Jul 4, 3:24 PM CDT, 2 hours 14 minutes before

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Special weather statement, Jul 4, 3:53 PM CDT, 1 hour 45 minutes before

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Special weather statement, Jul 4, 4:34 PM CDT, 1 hour 4 minutes before

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Special weather statement, Jul 4, 4:39 PM CDT, 59 minutes before

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Special weather statement, Jul 4, 5:12 PM CDT, 26 minutes before

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The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 3, 7:11 PM CDT	River Flood Advisory	LZK	Independence, Jackson, Lawrence	36 hr
Jul 4, 12:46 PM CDT	Special Weather Statement	LZK	Faulkner, Van Buren	44 min
Jul 4, 12:58 PM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Faulkner, White	29 min
Jul 4, 1:47 PM CDT	Flash Flood Warning	LZK	Fulton, Independence, Izard, Sharp, Stone	2 hr
Jul 4, 2:05 PM CDT	Special Weather Statement	LZK	White	40 min
Jul 4, 2:29 PM CDT	Special Weather Statement	LZK	Independence	46 min
Jul 4, 2:31 PM CDT	Severe Thunderstorm Warning	LZK	Jackson, White, Woodruff	44 min
Jul 4, 2:41 PM CDT	Tornado Warning	LZK	Jackson, White, Woodruff	17 min
Jul 4, 3:24 PM CDT	Special Weather Statement	LZK	Lonoke	36 min
Jul 4, 3:53 PM CDT	Special Weather Statement	LZK	Prairie	37 min
Jul 4, 4:05 PM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Prairie	25 min
Jul 4, 4:34 PM CDT	Special Weather Statement	LZK	Prairie	41 min
Jul 4, 4:39 PM CDT	Special Weather Statement	LZK	Faulkner	36 min
Jul 4, 5:12 PM CDT	Special Weather Statement	LZK	Monroe, Prairie	33 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2017 Every severe thunderstorm warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.